Did she hear me alright?

There is this girl in my Math class and we have spoken to each other only a few times but still say hi when we see each other in the hallway. I asked her for her number like this, "Hey, could I get your number for like math doubts and maybe ask you ask?", she said yeah okay andgave me her number.But I feel she didn't even react much to the asking out part and feel she didn't hear it maybe?